SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 543 ...

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SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
FIGURE 9.—Macrobrachium lar from the Philippines: a, anterior carapace and appendages, lateral aspect, of male
from Varadero Mountain, Mindoro, with carapace length of 38.2 mm; b, right 3rd pereopod, dactyl, and propodus,
of male from Nonucan River, Mindanao, with carapace length of 41.0 mm; c, same, dactyl, denuded.
14.8] 15 females [6.1-10.1], 9 ovig [6.1-10.1].—Marikina
River at Wawa, Luzon; [14°44', 121°1 l'E]; 1 Jan 1908; 9 males
[6.4-14.8] 8 females [6.1-8.0].—Antipolo, Luzon; [14°35X
121°10 / E];26 Jan 1908:1 male [16.3].
RANGE.—Known only from the general vicinity of Manila,
Luzon, Philippines.
REMARKS.—The single male from Antipolo agrees with
Cowles' description of M. lanceifrons var. montalbanense but
it was collected only a few miles from the Marikina River at
Wawa, where typical specimens of M. lanceifrons occurred,
and we can therefore see little reason for regarding that variety
as a subspecies, particularly as Cowles (1914:379) noted that
both forms had similar distinctive color patterns.
•26. Macrobrachium lar (Fabricius, 1798)
FIGURE 9
Palaemon Lar Weber, 1795:94 [nomen nudum].
IPalaemon longimanus Weber, 1795:94 [nomen nudum].
Palaemon Lar Fabricius, 1798:402 [type locality: "in India Dom. Daldorff' (?
= Tranquebar)].
IPalaemon longimanus Fabricius, 1798:402 [type locality: "in India oriental!
Dom. Daldorff" (? = Tranquebar)].
Palaemon ornatus Olivier, 1811:660 [type locality: East Indies].
Pal[aemon] tridens White, 1847:78 [type locality: Mauritius ?].
Plalaemon] vagus Heller. 1862b:417, pl.2: figs. 42,43 [type locality: Ambon].
Palaemon spectabilis Heller, 1862a:527 [type locality: Tahiti].
Palaemon ruber Hess, 1865:165, pi. 7: fig. 20 [type locality: Fiji Islands].
Palaemon mayottensis Hoffmann, 1874:32, pi. 9: figs. 61, 62 [type locality: He
de Mayotte. Comoro Islands, and I'tle Nosy Fali, Madagascar].
Palaemon reunionnensis Hoffmann. 1874:33, pl.9: figs. 66, 67 [type locality:
La Reunion].
Palaemon madagascariensis Hoffmann, 1874:35, pi. 7: fig. 58 [type locality:
Nosy Fali. N.W. Madagascar].
Leander dionyx Nobili, 1905b:482, pi. 12: fig. 2 [type locality: Bogadjim (=
Stephansort), Papua New Guinea].
Palaemon lar.—Cowles, 1914:380, pi. 2: fig. 7.
Macrobrachium lar.—Holthuis, 1950a: 176, fig. 37.
DIAGNOSIS.—Rostrum falling slightly short of level of distal
end of antennal scale, rostral formula: 2 + 5-7/2-4, posteriormost
tooth of dorsal series more remote than others;
branchiostegal suture not extending posteriorly beyond hepatic
spine; telson with posterior apex not overreaching posterolateral
spines; antennal scale with lateral margin convex; 1st
pereopod with chela about '/2 as long as carpus; 2nd pereopods
usually unequal in length, similar in form, palm subcylindrical,
fingers bearing scattered setae not concealing surface, dentate
on opposable margins, fingers usually gaping (in full-grown
males), fingers from 3 A to quite as long as palm, palm not
clothed in dense pubescence anywhere, chela more than 3'/2
times as long as carpus, palm slightly longer than to twice as
long as carpus, carpus shorter than merus, with shallow
longitudinal groove; 3rd pereopod overreaching antennal scale
by less than length of dactyl, propodus bearing numerous
appressed spines; maximum postorbital carapace length more
than 55 mm.
MATERIAL.—PHILIPPINES. Sablan, Benguet, Luzon;
[16°30', 120°40'E]; 14 Mar 1908: 2 males [35.7, 37.7].—Small
creek at Varadero Bay, Mindoro; [13°3O'N, 120°59'E]; 27 Oct
1909; dynamite: 2 males [15.1, 16.8] 1 female [16.3].—
"Varadero Mountain," [probably] Mindoro; 23 Jul 1908: 11
males [16.2-38.2] 2 females [24.3-27.7].—Calawagan River
3 miles from mouth, Mindoro; [B^TSf, 120°28'E]; 11 Dec
1908 (1500); 16' seine: 1 male [24.2].—Mananga River, Cebu;
[10°14'N, 123°50'E]; 25 Aug 1909:2 pairs of 2nd pereopods.—
Nonucan River, Iligan Bay, Mindanao; 8°13'N, 124°12'E; 6
Aug 1909 (0800); dynamite: 1 male [41.0].—Small stream at
Mati, PujadaBay, Mindana; [6°57'N, 126°13'E]; 15 May 1908:
8 males [9.2-26.3] 7 females (20.2-20.9).
INDONESIA. Stream, Pulau Ambon; [3°4O;S, 128° 10']; 5
Dec 1909; dynamite: 6 males [13.0-26.0].—Ambon Market;
[3°43'S, 128°12'E]; 5 Dec 1909; 1 male [24.2] 6 females